About 7000 people per day [1]. Because they either
- Don't know you can do it from a command line
- Don't bother remembering the order of arguments
- Want to see all record types in one go instead of repeating the command for every record type
- Would like to have the output clearly formatted
- Are currently on mobile
- Would like to see additional ip info for A/AAAA records
- Would like to check responses for multiple recursive resolvers without remembering all their IP's
- Would like to test GEO DNS